Burner for liquid fuel



0V. 14, 1939. J. L BREESE 2,l79,610

BURNER FOR LIQUID FUEL Original Filed March 18, 1937 m i a 2.5 ,//72 2 @@QSGGGGOOOO n /4- oo@ i4 @00 o o @0E/235D o o o 9 ooo) @lieg o @o J3 @@@OQDQM 'f2' atented ov.` it, f

BURNER FOR LIQUID FUEL .lames'Ll Breese, Santa Fe, N. Mex., assignor to Oil Devices, Santa Fe, N. Mex., a limited partnership of llllinois loriginal application March 1s, 1937, serial No.

131,573. Divided and this application January 4 17, 193s, serial No. 185,284

3 Claims.

My invention relates to an improvement in burners and is particularly adaptable to burners or stoves or furnaces burning liquid hydrocarbon and the like.

One purpose is the provision of improved bafe means.

Another purpose is the provision of improved means. for adjusting the baille, the baiiles being employed for controlling combustion or limiting down drafts of air in the so-called pot type of burner.

Other objects will appear from time to time in. the course of the speciiication and claims.

The present application is a division of my copending application Serial No. 131,573, filed on the 18th day of March, 1937.

I illustrate my invention more or less diagrammatically in the accompanying drawing wherein:

Figure l is a vertical axial section;

Figure 2 is a section on the line 2-2 of Figure l; and

Figure 3 is a vertical axial section through a variant form of the device.

Like parts are indicated by like characters throughout the specification and drawing.

Referring to the drawing, I indicates any suitable base or surface upon which I indicate as supported an outer shell or housing 2. 3 indicates an inner housing or shell having about its base a plurality of air apertures t. It will be understood that any suitable means may be employed for admitting air to the space between the members 2 and Si.

t is any suitable horizontal or transverse partition adacent the bottom of the member 3 and herein shown as above the levelof the air inlet apertures i. It may be provided with a central aperture li herein shown as closed by the aperf tured or foraminous plate l. 8 is an inlet pipe for a liquid fuel and 9 generally indicates a iire pot, combustion chamber or mixing chamber through the bottom I U of which extends the outlet end I I of the fuel pipe t.

I2 indicates a bottom row of apertures whereby air may penetrate to the interior of the member t. It indicates other apertures, the apertures I2, or the apertures I2 and I3 together, being eective to admit a primary air supply for mixture with the vaporized liquid hydrocarbon which spreads out on the bottom I0 and is fed from the fuel pipe 8. I4 indicates an upper group or row of air apertures herein shown as upwardly and inwardly inclined. These apertures are adapted to admit a secondary air supply which, when it mingles with the vaporized hydrocarbon which is already mixed with the air from the primary air inlets I2 and I3, forms the combustible mixture the full combustion of which takes place above the upper edge of the pot or chamber 9.

5 In Figure l I illustrate this chamber as partially closed by an upper baille I5 with a central aperture I6. In order to control or vary the effective diameter of the aperture in the baille I5, I provide a rotatable ring I'I having any suitable control handle or member I8 and being provided with a plurality of arcuate slots I9 of predetermined length. These slots I9 receive headed members which may be mounted upon the baille I5.

The ring Il is the actuating member for the iris diaphragm structure formed of a plurality of shutter members 2l, each of which is pivoted as at 22 to any suitable abutment ring 23 shown as mounted upon the baffle I5. Each 'member 2l is also provided with a slot 24 in which rides a pin or abutment 25 which is mounted on and moves with the ring Il. Each member 2l has an effective inner edge 26.

The parts are so proportioned that when the handle I8 is moved to move the ring Il to one limit of its possible movement the aperture X is practically closed or has any predetermined diameter. When the handle I8 is moved in the opposite direction the members 2l are rotated outwardly in such fashion that their edges 26 deiine an aperture which may be as great as the aperture I6. In other words, what I provide is in effect a baille with an adustable aperture.

It will be understood of course that by a mere change in the size and proportion ofparts I might so dispose my iris structure as to enable the user to run without a baille at all if desired. However, I nd it preferable to employ the structure as shown in Figures 1 and 2.

In Figure 3 I illustrate the baille structure as located below the secondary air apertures Ill, whereas in the form of Figure 1 I illustrate it as above the said apertures. It will be understood that the above described baille structure 4 device, nevertheless many changes may be made parts without departing from the spirit of my invention. I therefore wish my description and drawing to be taken as in a broad sense illustrative or diagrammatic rather than as limiting me to the precise showing.

The use and operation of my invention areas follows:

My invention may be broadly applied to any situation where the combustion or mixing chamber is provided with an upper or intermediate baflie having an aperture the diameter of which should be varied or controlled, either at the time of starting combustion in the device or in order to control the rate of combustion or the quality of combustion in the area below the baille.

One application of my invention is to a mixingV and combustion chamber in which the primary air supply is first mixed with a hydrocarbon delivered along the line 8 in order to form a preliminary mixture which in turn has supplied to it a secondary air supply in order to create a. final' and fully combustible mixture. Once combustion is instituted above the bottom I0 of the pot 9, the hydrocarbon delivered along the line 8 is vaporized as a result of such combustion and rises upwardly in the pot S and receives the air deliveredto it through the apertures l2 and i3. The size and area and clistribution of these apertures is so proportioned as to provide sumcient air for a preliminary mixture without .providing suiicient air for final combustion. As the mixture rises it receives its final air from.the apertures it and the completed mixture passes upwardly through the baie l5 in Figure 1, or through the baiile 30 in Figure 3, and combustion takes place in the main above said bafiies.

It will be realized that my invention includes the employmentl of means for varying the cross sectional area of the upper opening for the combustion or mixing chamber 9 or for varying the opening of the intermediate or lower baille.

chamber having a wall penetrated by a plurality of air inlet apertures, a baille associated with said chamber and located above the highest of said air inlet apertures, said baille having an aperture adapted to permitl the upward flow therethrough of gases from said chamber, and means for varying the cross sectional area of said aperture and for thereby controlling the inflow of air through said apertures in said chamber wail.

2. In combination, a fuel mixing and combustion chamber for liquid hydrocarbon burners, said chamber having a wall penetrated by a plurality of primary air inlet apertures, an additional row of secondary air inlet apertures adjacent the upper edge of the chamber, a barile associated with said chamber and located above the highest of the primary air inlet apertures, said baille having an aperture adapted to permit the upward flow therethrough of gases from the part of the chamber below said baille, and means for varying the cross sectional area of said aperture, and for thereby controlling the iniiow of air through the primary air apertures in said chamber wall.

3. n combination, a fuel mixing and combustion chamber for liquid hydrocarbon burners, said chamber having a Wall penetrated by a plurality of air inlet apertures, a baille associated with said chamber and located adjacent the top of said chamber, said baille having an aperture adapted to permit theupward ow therethrough of gases from said chamber, and means for varying the cross sectional area of said aperture and for thereby controlling the inow of air through the apertures in said fuel chamber wall below said baille.

JAMES L. BREESE. 

